Edwin stanley clark



UNITE STATES PATENT OFFICE.

EDlVlN STANLEY CLARK, OF OAK ALYN, ENGLAND.

BRlCK, TILE, OR PIPE DIE.

SPECIFICATION forming part of Letters Patent No. 625,381, dated. May 23, 1899.

Application filed May 16, 1893- Serial No. 680,798. (No model.)

To all whom it may concern: These metallic sections B, with their wooden Be it known that LEDWIN STANLEY CLARK, collars or frames D and the porous matea subject of the Queen of Great Britain, rerial between them, are bolted together by 55 siding at Oak Alyn, near WVrexham, in the screw-threaded bolts and nuts Eand inclosed' .5 county of Denbigh, England, have invented in a water-jacket F, which latter is in comcertain new and useful Improvements in munication with the water-supply through Brick, Tile, or Pipe Dies, of which the folpipe G. The bolts, however, have washers lowing is a specification. B, Fig. 2, placed on them between each sec- 60 This invention relates to apparatus for tion B and porous insertion O. The porous IO molding or forming bricks, tiles, earthenware material, which may be of Well-Woven felt, is

pipes, or the like, and has mainly for its obable to absorb and deliver water under presject to make such apparatus more durable, sure from the water-jacket F to the working to enable any part of it to be quickly repaired surfaces of the die to form a lubricant for 6 when so required, to obviate the use of molethe stream of clay passing through, thus skin, to minimize friction of the clay in the largely reducing the friction on the sides of mold, thereby reducing the pressure required the die. It is, in fact, a metal die with its to force the clay through, and to enable the surface lubricated by means of water, the clay to be used in avery hard state, so that the flow of which can be regulated by tightening 7o bricks when out off are ready for pressing. up the bolts E to squeeze the plates B to- The invention will be understood from the gether and compress the porous material 0 following description,reference being had to between them or relax the same, the washers the accompanying drawings, in which- B preventing the felt insertions 0 being com- Figure l is a sectional view of the apparapressed to such an extent as to prevent the tus for molding or forming bricks and tiles; passage of water.

2 5 Fig. 2, a detail view; Fig. 3, a sectional ele- The water-jacket may be in two parts, one,

vation of the apparatus for making sanitary f, bolted to the mouthpiece of the mill, and pipes or chimney-tops. the other, f, (containing the built-up sec- By my invention as applied to making tions constituting the die,) is bolted to it, the bricks the clay is fed into a pug-mill provided joint between the two being provided witha 0 with rotary knives or cutters which commirubber seating H to insurea water-tight joint nute the clay, breaking the lumps, and mixbeing efiected. ing it withthe other materials ofwhich bricks The mouthpiece I of the die is so conare made. The stream of clay as it exudes structed as to allow of renewal without defrom the mill is passed through a die.A,formed struction of the water-jacket. It will be oh- 3 5 of metallic sections B, fitted and bolted tovious that the metallic sections and the porgether, with porous material C alternating ous material intervening between, which between each metallic section,-ancl constitutwhen bolted together constitute the die, may ing a four-sided or other-shaped box open at be of any suitable shape on their inside or each end. (See Figs. 1 and 2.) Through working edges, so as to produce the variety 40 this die the stream of clay is passed to mold or shape of brick required, such as copings,

it into the exact size and shape of a brick bearers, slabs, bricks, or blocks of any reguedgewise or lengthwise, as required, and delar shape, and that, furthermore, by hanging liver it in one unbroken stream, after which a series of mandrels or cores longitudinally 5 the clay thus molded is cut upinto bricks by in the die hollow or perforated bricks can be 5 transverse-moving knives or wires. Each of made without any alteration of the machine these metallic sections B, which may be of or by changing the sections of which the die steel or other metal, is formed at a distance is built up for sections of a different shape from their working edges with a recess, into the shape of bricks produced by the apparawhich is fitted a wooden collar orframe D, tus can be altered as required. The top and 50 which lies flush with the metallic sections bottom surfaces of the die are by preference and forms a foundation for the porous maparallel, but the sides have a taper of about terial O to be nailed or otherwise fastened to. two inches in their length.

The invention as applied to, making sanitary pipes or chimney-tops is arranged on substantially the same principle as for making bricks; but of course the sections constituting the die or box are so shaped as to produce the shape of pipe or chimney-top required. Thus for cylindrical pipes or chimney-tops the die or box A is circular, Fig. 3, and of the same diameter inside as the outside diameter of the pipe, while a core A is mounted longitudinally in the die of the same diameter outside as the inside diameter of the pipe. This core A is formed also of metallic sections B, with porous material 0 between, which may be nailed to wooden collars or rings to keep it in place, or it may be made without the wooden collars and bolted up by means of bolts E. The core A is made hollow, and its .rod J is also hollow, the water required as a lubricant passing down this rod into the core and through the porous material.

By this invention the use of moleskin in brick-dies is done away with and the dies can be made of steel, iron, and other metal instead of, as in the ordinary practice, wood. The sections are easily renewable. The porous material is not exposed, except at its edge, to the wear due to the clay passing through the die, and the wood parts to which the felt is nailed are not exposed at all. In making sanitary pipes, as Well as in making bricks, the friction of the clay in the die is largely reduced by the water lubrication, While a corresponding decrease of the pressure required to force the clay through the die is secured.

I claim as my invention 1. The improvement in dies for molding or forming bricks, tiles, earthenware pipes, or the like, which consists in the combination of metallic sections fitted and bolted together with porous material between, water jackets or chambers'surrounding or located in the die, tightening devices and hard spacing devices in the porous material whereby the porous material can be tightened, but not made too tight to absorb and deliver water from the jacket or chamber to the working surfaces of the die, the water thus forming a lubricant for the stream of clay passing through the delivery of the Water to the working surfaces being capable of regulation by tightening up the bolts to compress the porous material between the plates or releasing the same, substantially as described.

2. The combination in a molding device for the purposes described, of a series of metallic segments recessed at a distance from the moldsurface, a material capable of holding nails and of having nails driven into it filling the recesses, porous segments alternating with the metallic segments and nailed or fastened to the aforesaid material, means for admitting wate'iy and means for regulating the pressure of the segments together, substantially as described.

In witness Whereof I have hereunto signed my name, this 6th day of May, 1898, in the presence of two subscribing witnesses.

EDWIN STANLEY CLARK.

Witnesses:

G. O. DYMOND, TV. H. BEESTON. 

